Messages in this thread Patch in this message | | | From | Nicolas Saenz Julienne <> | Subject | [PATCH 1/9] dt-bindings: reset: Add a binding for the RPi Firmware USB reset | Date | Mon, 8 Jun 2020 21:26:53 +0200 |
| |
The firmware running on the RPi VideoCore can be used to reset and initialize the board's xHCI controller. The reset controller is passed to the PCI device through the DT, hence this binding.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> --- .../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml index b48ed875eb8e..8f9d0986c28f 100644 --- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml +++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml @@ -39,6 +39,22 @@ properties: - compatible - "#clock-cells" + usb-reset: + type: object + + properties: + compatible: + const: raspberrypi,firmware-usb-reset + + "#clock-cells": + const: 0 + description: > + There is only one reset line available, so no need for cell decoding. + + required: + - compatible + - "#reset-cells" + additionalProperties: false required: @@ -55,5 +71,10 @@ examples: compatible = "raspberrypi,firmware-clocks"; #clock-cells = <1>; }; + + usb_reset: usb-reset { + compatible = "raspberrypi,firmware-usb-reset"; + #reset-cells = <0>; + }; }; ... -- 2.26.2
| |